IS : 1885 ( Part XXXX ) - 1974 ( Reaffirmed 2001 ) Indian Standard ELECTROTECHNICAL PART XXXX VOCABULARY CONNECTORS ( Second Reprint SFJTISM~ER 1989 ) LJDC 001.4:621.315.683 @ Copyright 1971 BUREAU MANAK OF BHAVAN, INDIAN STANDARDS ZAF:\R MARC; 9 BAHADUR SHr\H NEW DELHI 110002 Gr 2 December 1974 IS t 1885 ( Part XXXX ) - 1974 Indian Standard ELECTROTECHNICAL VOCABULARY PART XXXX Electrotechnical Chairman SHRIJ. S. ZAVERI Members ADDITIONAL CHIEF ENO~NEER CONNECTORS 1 Standards Sectional Committee, ETDC RcprcJmting B&rat Bijlee Ltd, Bombay; and Rotating Machinery Sectional Committee, ETDC 15, IS1 Directorate General of Posts & Telegraphs (Ministry of Communications ), New Delhi DIRECTOR OFTELEORAPHS (X ) ( Alternate ) National Physical Laboratory ( CSIR ), New Delhi SHRIV. K. BATRA National Test House, Calcutta DR A. S. BHADURI Ministry of Defence ( DC1 ) BRIG B. BHASIN LT-COL ?rl. H. PAI( Alternate) Cond$;; and Cables SectionaI Committee, ETDC SHRIM. R. BHAT Switchgear and Controlgear Sectional Committee, ETDC 17, IS1 Electronics & Radar Development Establishment DIREC~JR ( Ministry of Defence ), Bangalore Central Water 32 Power Commission ( Power Wing ), DIRECTOR ( Tan ) New Delhi DEPUTY DIRECTOR ( TED ) ( Alternate ) Wireless Planning & Co-ordination Wing, Ministry SHRI V.M. GOGTE of Communication?, New Delhi Heavy Electricah ( India ) Ltd, Bhopal SHRI M. K. MAJUHDAR SHRIS. K. BHATIA( Aknute ) Institution of Engineers ( India ), Calcutta SHRIS. S. MURTHY General Nomenclature and Symbols Subcommittee, PROPR. C. NARAYANAN ETDC 1: 3, IS1 Transformers Sectional Committee, ETDC 16, IS1 SHRIU. K. PATWARDWAN Association, Electrical Manufacturers' Indian DR G. M. PHADKE Cen%n~l%rochemical Research Institute ( CSIR ), Karaikudi SHRI H. N. VENKOBARAO t Alternate 1 El&ical Wiring Accessories Sectional Committee, ' SHRI K. N. RAMAswAXY ETDC 44, IS1 Relays Sectional Committee! ETDC 35, IS1 DR T. S. M. RAO Secondary Cells and Batteries Sectional Committee, DR H. V. K. UDUPA ETDC 11. IS1 (conlinu@ie7I&aga2: SnmR. RADHAKRLWAN @ Copyright 1974 SHRIV. S. BHATIA BUREAU OF INDIAN STANDARDS This publication is protected under the Indian CopyrIght Act ( XIV of 1957) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be 8x1 infringement of copyright under tho said Act. (Continued fm page 1) Rcjrcsenthg Mambers %iRl Y. VENICATARAMUH Da B. H. WAIXA SERI N. SIWIVASAN, Director ( Elec tech ) ( Gcwhry ) Elcc;~~kIEquipment Sectional Committee, ETDC Circuits Semicdnductor Devices and Integrated Sectional Committee, ETDC 40, IS1 Director General, IS1 ( Ex-o&cio Member ) Electromechanical Chaimwn Sxnx H. J. MIRCHANDANI Components for Electronic Committee, ETDC 37 Posts and Telegraphs Equipment Sectional Board, New Delhi Members SHRI JOHN FRANCIS( Al&ma& to Shri H. J. Mirchandani ) All. SHRI H. K. L. ARORA India Radio and ( AIREA ), Bombay Electroqics Association SHRI R. G. KESWANI( Akcrnatc I ) SHRI ARUP CHAIJDHURI ( Alternate II ) SHRI L. S. V. EASWAR (Al&mate III ) Allied Electronics Corporation, Bombay SHRI BAKUL HARLWANKBR SHRIJ. C. SISODIA(Alter&s ) DirsD;$e General of Technical Development, SHRIBALRAJ BHANOT R. G. DEODHAR( Alternate B. P. Goose SHRI K. GURURAJA SHRI S. JALEBL HASAN SHRI S. A. SH~NDE( Altcrnatr ) !hRI s. G. V. Mmt SHRI SHRI New ) National Test House, Calcutta Bharat Electronics Ltd, Bangalore Bakelite Hylam' Ltd, Hydcrabad Electronics Corporation of India Ltd ( Department Atomic Energy ) Hegde & Golay Pvt Ltd, Bangalore of SHRIV. MIT~ER SHRI G. SUDERSANAM ( Alternate ) Philips India Ltd, Calcutta SHRI M. S. NAIK SWRIP. B. PAREKW (Alternate ) Directorate General of Civil Aviation (Ministry of !&RI J. PA~ABIRAXAN Tourism & Ciwl Aviation ) SHRI S. RANQANATHAN( Alternate) Formica India Ltd. Poona SHRI N. RAYACXANDRAN Mirh-v of Defence ( DGI ) SHRI P. K. RAO Indian Telephone Industries Ltd, Bangalore SWRI D. K. SACHDEV ___ S&I S; D. PANI ( Ahmnatr ) Directorate of Technical Development & Production Wo GDR D. SP~HARATNAY I Air 1 I Ministrv of Defence j SHRI T. V. VARADARAJAFJ ( Altemutc )` ' * M. C. Engineering Co, New Delhi SHRI C. L. SWARYA SHR~ SURWH KWAR GIJPTA (Alternate ) Telecom Industries Pvt Ltd, Bombay SS~RIK. M. TOPR+ SHRI B. N. SHAH ( ,&~?Iu@ ) Mmistry of Defence ( R & D ) DR S. VENKATACHAWU SHRI C K. V. RAO (Altumqk) Director General, IS1 ( &-@cio Member ) Stat N. SUINIVASSN, Director ( Elec tech ) ( SCCrUtiv ) 2 1st lSS!i(Partxxxx)~l974 Indian Standard ELECTROTECHNICAL VOCABULARY PART XXXX CONNECTORS 1 0. FOREWORD 0.1 This Indian Standard ( Part XXXX) was adopted by the Indian, Standards Institution on 8 October 1974, after the draft finalized by the Electrotechnical Standards Sectional Committee, in consultation with the Electromechanical Components for Electronic Equipment Sectional Committee, had been approved by the Electrotechnical Division Council. 0.2 This standard covers terms and definitions relating to connectors in electronic and telecommunication applications. used 0.3 With progressive formulation of Indian Standards on many types of connectors used in electronic equipment, the need for uniform definitions of terms relating to these types of connectors was felt. With a view to ensuring this and avoiding repetition of these terms and definitions in individual standards, this standard has been prepared. 0.3.1 The general term`s common to both power and electronic fields are not included in this standard. 0.3.2 Those terms which are relevant to a particular type of connectors and can not be classified as a common term are also excluded from this standard. 0.4 This standard is one of a series of Indian Standards on electrotechnical vocabulary. 1. SCOPE I .l This standard ( Part XXXX ) covers definitions of terms relating to connectors used in electronic and telecommunication applications. 2. TERMINOLOGY component designed to provide connections between 2.1 Adaptor -A two or snore other connectors where mechanical direct ,connection is impossible or electrical direct connection is undesirable ( sti 2.9 )`. 3 IS : 1885 ( Part XXXX ;z- _ ) - 1974 2.2 Back-Mounted/Rear-Mounted - A connector with its mounting flange behind the mounting surface when looking at front of the connector. part of the contact, 2.3 Barrel, Conductor -That which accommodates the conductor. splice or terminal 2.4 Barrel, Insulation/insulation' Support - That part of the contact, splice or terminal which accommodates the conductor insulation. 2.5 Boot-An accessory designed to be placed around the wire terminations of a connector as a protective housing or a container for potting compound; usually of flexible material. 2.6 Cable Screen Clamp/Cable Shielding Clamp-A part of a connector or an accessory attached to the connector body to support and terminate the cable screen. 2.7 Connection, Solderless, Wrap Under consideration. 2.8 Connecdon, Weld A connection made by welding. component containing one or more contacts and 2.9 Connector -A normally attached to a cable or to a piece of equipment for the purpose of providing electrical connections through a suitable mating part between cables and/or pieces of equipment. 2.10 Connector Body - A connecgor lessits contacts. ____.. L-.2.X1 Co&i&&~`Butfing - A connector in which electrical continuity is achieved between non-penetrating contacts and maintained by axial pressure. 2.12 Connector, Circular face is basically circular. 2.13 Connector -A connector of which the front mating Coupler -See 2.1. 2.14 Connector, Edge/Edge Socket -A connector into which the flat edge of a printed wiring board or of a plug is inserted to make electrical contacts directly to contact pads/fingers. 2.15 Connector, Float Mounting - A connector with mounting arrangements permitting its slight movement to facilitate alignment with the mating connector. 2.16 Connector, wire or cable. Free A connector for attachment to the free end of a metallic shell 2.17 Connector, Grounding -A connector with the designed to provide a low resistance continuity to ground. 2.18 Connector, Hermaphroditic identical connector. - A connector which mates with an IS: 1885 ( Part XHXX 2.19 Connector, Hermetic -A 2.20 Connector connectors. Mated Set-A ) - I974 connector having a hermetic seal. particular combination of mating 2.21 Connector, Plug-A connector with only male contacts. 2.22 Connector, Printed Circuit/Printed Wiring - A connector specially designed to facilitate connections to printed circuits/wiring. 2.23 Connector, Quick Disconnect -A connector which assists in rapid unmating of contacts. fitted with a device 2.24 Connector, Rack and Panel - One of two mating fixed connectors intended to provide a connection between a unit and its mounting rack. It is usually provided with an alignment device to assure correct mating. It normally has no coupling device and is mated by the movement between the unit and the rack. 2.25 Connector, Rectangular -A face is basically rectangular. connector of which the front mating 2.26 Conneetoi-, Shielded - A connector designed, to protect the internal conductors from external electro-magnetic interference and to prevent radiation. 2.27 Connector, Single-Hole Mounting/Jam Nut Mounting - A circular connector having a shoulder and thread on the outside of the shell and mounted through a single hole in a panel and fixed by a single nut. 2.28 Connector, Snatch Disconnect (Break-Away ) - A connector designed to separate when a specified force is applied to the cable without damage to the cable or the connector. 2.23 Connector, Socket/Receptacle contacts. A connector having only female which 2.36 Contact - Part of the conductive element in a connector mates with a corresponding element to transfer electrical energy. 2.31 Contact Area - The area in contact between two mated contacts, two conductors, or a conductor and a contact permitting the flow of electricity. 2.32 Contact Arrangement/Insert Arrangement spacing and configuration of contacts in a connector. The number, 2.33 Contact Barrier Seal/Seal Interfacial - A seal provided at the insulator interface to prevent the ingress of moisture or contaminants across the connector when mated. 2.34 Contact, Bifprcated - A flat contact with a lengthwise slot, the two arms of which apply equal contact pressure in the same direction. 5 IS : 1885 ( Part XXXX 2.35 Contact, ) - 1974 Blade - A solid rectangular with a chamfered mating edge. sectione,d contact, barrel usually designed , 2.36 Contact, Crimp to he crimped. - A contact Force - having a conductor The force needed 1. 2.37 Contact Engaging mating pair of contacts. to fully engage a having an 2.38 Contact, Female/Contact, Socket - A contact engagement end which will accept entry ofa male contact. 2.39 Contact, Filter - A contact with a built-in against certain frequencies. 2.49 Contact Float - A contact movement in the holding insulator. 2.41 Contact, Hermaphroditic identical contact. 2.42 Contact Inspection provided in the conductor conductor position. barrel - filter to discriminate of limited with free an hole the which is capable which A contact mates Hole/Crimp to permit Inspection visual inspection Hole --t A of .2.43 ~Contact, Male Contact, Pin - A contact having an engaging end which makes contact by insertion into a female contact. 2.44 Contact Pad/Contact Finger - Pad on the edge of a printed board intended to make connection with the contacts of an edge socket connector. 2.45 Contact Pull-out Force - The force required to remove a contact from a connector by exerting axial pull. 2.46 Contact, Resilient/Contact, exerting pressure to its mating part. 2.47 Contact Resistance contacts. Spring -A contact capable of The electrical resistance of a pair of mated the contact or in the 2.48 Contact Retainer - A device either on insulator to retain the contact in the insulator. 2.49 Contact Retention Force - The axial load in either direction which a contact can withstand without being permanently displaced from its position within the insulator. 2.59 Contact Separating. mating pair of contacts. Force - The force needed to fully separate a 2.51 Contact Travel for Electrical Engagement - The distance a contact travels on the.surface of its mating contact during engagement of the connectors. 6 IS : 1885 ( P&t XXXX 2.52 Contact, Tuning Fork fork. ) - 1974 A spring contact shaped similar to a tuning quick coupling device for mating connectors 2.53 Coupling, Bayonet -A utilizing projections riding in ramps. Providing jacking and locking features with limited rotation. 2.54 Coupling, Quick-Disconnect rapid uncoupling of mated connectors. A coupling device which assists in 2.55 Coupling Ring - A cylindrical device normally have finger grip, used for coupling and uncoupling mating connectors. 2.56 Coupling, Threaded - A means of coupling connectors by engaging threads in a coupling ring with threads on mating connectors. 2.57 Coupling Torque - The force needed to rotate a coupling ring or jackscrew to fully engage a mating pair of connectors. 2.56 Cover, Connector - An accessory to cover the mating face of an unmated connector for mechanical and/or environmental protection. Such covers are normally fitted with suitable means to securely attach this to the equipment or cable when not in use, to prevent their misplacement. 2.59 Crimp - The physical compression or deformation of a conductor barrel or ferrule around a conductor in order to make a mechanical and an electrical connection. 2.60 Current Rating of Mated Contacts - The maximum current a pair of mated contacts is capable of carrying continuously under specified conditions. 2.61 Ferrule - An accessory in the form pf a short metal tube to provide cable support or termination for a cable screen. 2.62 Filler Plug/Sealing Plug - An accessory contact or grommet cavities in a connector. used to fill unwired 2.63 Front Mounted - A connector with its mounting flange in front of the mounting surface when locking at the front of the connector. 2.64 Grid-Spaced Contacts - Contacts spaced in a regular rectangular pattern in accordance with a specified reference grid. 2.65 Grommet. Connector/Seal, Grommet - A part of a connector or an accessory used to support and protect the wires or cable at the point of entry to the connector. It may also prevent the ingress of moisture or contaminants. 2.66 Grommet Nat - A part of a connector retain the grommet or grommet and follower. 7 or an accessory used to IS : 1885 ( Part XXXX 2.67 Guide ) - 1974 Pin - A pin or rod extending beyond the mating face of a connector designed to guide the mating of the connector to ensure proper alignment of the contacts. 2.68 Insert, Connector - An insulating and positioning contacts in a connector. element used for supporting 2.69 Insulation Barrier - A raised or recessed configuration of the insulator around or between contacts to increase creepage distance between conducting surface. 2.70 Interface, Connector face each other when mated. 2.71 Jack, Telephone PlugThe two surfaces of mating connectors which A connector to mate with a telephone ( Socket ) - 2.72 Key - A projection which engages with a keyway to guide connector during mating. 2.73 Keyway - A slot or groove in which a key engages. - 2.74 Plug, Telephone a common shank. A connector consisting of two or more contacts on connectors to 2.75 Polarization - The provision of features on mating prevent incorrect mating. 2.76 Seal, Shell/Seal Gasket Scatiog - A seal provided between ntaminants into the interior shells to prevent the ingress of moisture and c r!l of the connector when mated. 2.77 SheIl, Connector/Connector Housing into which the insert and contacts are assembled. The part of a connector which provides 2.78 Shroud - A part of a connector or an accessory physical cover to otherwise exposed contacts. 2.79 Temperature, Maximum Operating - The maximum internal temperature of a connector resulting from ambient conditions and electrical loads which can be continuously sustained for a stated service life. 2~80 Terminal 2.81 Wire - A device to which a conductor can be terminated. Contact - Range, a particular conductor barrel. 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